Home / 18,740.51-28,111.82-7,646.95

Finding the Fourth Proportional to 18,740.51, 28,111.82 and 7,646.95

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Solution

The fourth proportional to 18,740.51, 28,111.82 and 7,646.95 is: 11,470.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,740.51 : 28,111.82 = 7,646.95 : x
  2. Step 2: Convert to fraction form
    18,740.51/28,111.82 = 7,646.95/x
  3. Step 3: Cross multiply
    18,740.51x = 28,111.82 × 7,646.95
  4. Step 4: Simplify right side
    18,740.51x = 214,969,503.16
  5. Step 5: Solve for x
    x = 214,969,503.16/18,740.51
  6. Step 6: Final answer
    x = 11,470.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.